1. 1 Ford
2. 5 or 6 Fords
3. 0 Fords
Notes.
The possible numbers of Fords, consistent with the
three comments, are as follows. The answers are obtained
by inspection.
A: 1, 2, 3, 4, 5, 6
B: 2, 3, 4, 5, 6
C: 0, 1, 2, 3, 4
THIS MONTH'S QUIZ
1. A canoeist can travel at 5 mph in still water. On one occasion he paddled one mile upstream and back again to his starting point. If the current was flowing at 3 mph, what was his average speed for the two-mile journey?
2. On another occasion he completed the same double journey at an average speed of 3.75 mph. What was the speed of the current that day?
3. On a day when the current flowed at 3 mph, the canoeist needed to paddle across the river to a point on the other bank directly opposite, and back again. What was his average speed for the double journey?